Title :
Comparison of bubble behaviors on two different wall-materials in low frequency ultrasonic field
Author :
Yoshida, Kenji ; Yoshikawa, Taisuke ; Obata, Kazuya ; Watana, Yoshiaki
Author_Institution :
Fac. of Life & Med. Sci., Doshisha Univ., Kyotanbe, Japan
Abstract :
It was investigated now properties of a wall, to which a bubble was attached, affected the bubble behaviors in ultrasonic field. Bubble behaviors on two different materials, a brass and an agar gel, were observed under a transient acoustic standing wave with the center frequency of 27 kHz, using a high-speed video camera. Effects of the wall-material on the bubble behaviors were investigated by comparing the bubble behaviors on these two different materials. Optical observations demonstrated that the difference of wall-material led to remarkable differences of the bubble behaviors, particularly generation processes of a liquid-jet at large sound pressure. These observed results characterized the effect of the difference of wall-material on bubble behaviors.
Keywords :
brass; bubbles; flow visualisation; gels; jets; nonlinear acoustics; radiation pressure; ultrasonics; agar gel wall; brass wall; bubble behavior; bubble-wall interaction; frequency 27 kHz; high speed video camera; liquid jet generation; low frequency ultrasonic field; sound pressure; transient acoustic standing wave; wall material; wall- material effects; Acoustic materials; Biological materials; Biomedical acoustics; Biomedical optical imaging; Cameras; Frequency; High speed optical techniques; Hydrodynamics; Impedance; Optical materials; adhered bubble; bubble deformation; component; liquid-jet; optical observation; secondary Bjerknes force;
Conference_Titel :
Ultrasonics Symposium (IUS), 2009 IEEE International
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4389-5
Electronic_ISBN :
1948-5719
DOI :
10.1109/ULTSYM.2009.5441934
